What you do depends on the data you intend to scrape. You might use an extension CustomWebView : An extended form of Web Viewer . The description indicates it can Find words and phrases in webview
Probably nothing wrong at all using your app to read text from a web page. It is OK to scrape a web page in general (unless the provider of that Web page specifically does not allow it). Said another way, don't worry about other's comments. It is usually OK to scrape a web page. 